The Torah permits us to eat fish that have fins and scales (Deuteronomy ch.14). No shellfish. See the attached Related link for a full list.
Observant Jews do not eat crayfish.
Fish that have fins and scales
sharks eat all kinds of fish
They don't eat fish. They eat algae off of the coral reefs.
Jews who keep kosher don't eat fish wihout scales (Deuteronomy ch.14).
yes they can
Yes.
angel fish
Goldfish. They are "feeder" fish for them.
cats-birds-bears-man-bigger fish eat smaller fish
They eat all kinds of fish! Cods, greenlings, salmonids...
fish